June 23rd, 2023, 03:56 AM | #1 |
ninjette.org newbie
Name: Dominic
Location: norfolk va
Join Date: Jun 2023 Motorcycle(s): 04 ninja 250r Posts: 3
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i can't get it started
it seems like i tried everything.
i bought a 04 ninja 250r and they said the carb needed replacement but it ran i rebuilt the carb changed the plugs and the starter and it won't start or it will start and stay idling with the choke on but if i use any throttle or turn the choke off, it dies i think it might be a vacuum leak but i have no clue been trying to get it running for a week thank you |
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June 23rd, 2023, 05:34 AM | #2 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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Hi Don, welcome!
It's common with these bikes for the carburetors to get dirty, and it's very difficult to get them truly clean. Take a look at this page: https://n4mwd.blogspot.com/2013/10/s...-passages.html Did you use jets from a carb kit when you rebuilt them? If so, that is probably contributing to your trouble. Kits contain aftermarket jets that are not correct. Also, if someone previously worked on the carbs, it's possible they assembled them wrong or left out important pieces. That happened to a guy here recently. |
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June 23rd, 2023, 05:23 PM | #3 |
ninjette.org certified postwhore
Name: Gordon
Location: new york
Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot.
MOTM - Nov '18, Mar '17
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Dom-
you made sure needle jets are present and correctly assembled (below the emulsion tubes) ?
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Custom Carb Service |
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June 24th, 2023, 04:12 AM | #4 |
ninjette.org member
Name: Jay
Location: Nh
Join Date: Aug 2022 Motorcycle(s): 07 Ninja ex250 blue and 07 Ninja black Posts: 133
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Guys it was one time....lol
Don't be like me.....the inverted needle jet is a bad performance mod IMG_7340.jpg |
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June 24th, 2023, 04:44 AM | #5 |
ninjette.org newbie
Name: Dominic
Location: norfolk va
Join Date: Jun 2023 Motorcycle(s): 04 ninja 250r Posts: 3
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what does that mean i think my needle is right
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June 24th, 2023, 04:49 AM | #6 |
ninjette.org member
Name: Jay
Location: Nh
Join Date: Aug 2022 Motorcycle(s): 07 Ninja ex250 blue and 07 Ninja black Posts: 133
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Back story is I installed those sliver tubes in the picture by dropping them in place via the carb throat. Totally wrong. The correct way is to insert them first before emulsion tube and main jet. When I had mine installed incorrect the bike would not rev past 5-6k before dropping power. See Gordon's post picture for correct orientation. |
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June 24th, 2023, 04:55 AM | #7 | |
ninjette.org member
Name: Jay
Location: Nh
Join Date: Aug 2022 Motorcycle(s): 07 Ninja ex250 blue and 07 Ninja black Posts: 133
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Quote:
What's your idle rpm set at when running? Things to check: -Airbox to carburetor fully seated and sealed -dirty air filter - spray wd40 or starter fluid around the ends of the carb holder boots at idle if the engine stumbles or accelerates you've found your leak. Also check around the airbox|carb connection. I like to take my seat and side fairing off, some times the spray will make its way to the air intake and make you think you found a leak. |
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June 24th, 2023, 08:40 AM | #8 |
ninjette.org certified postwhore
Name: Gordon
Location: new york
Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot.
MOTM - Nov '18, Mar '17
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Dom-
Care to share with us your carb cleaning "tools" you are employing? Pro compressed air? Soda blasting? Chemicals? Ultrasonic machine?
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Custom Carb Service |
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June 25th, 2023, 09:49 AM | #9 |
ninjette.org newbie
Name: Dominic
Location: norfolk va
Join Date: Jun 2023 Motorcycle(s): 04 ninja 250r Posts: 3
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found the problem
after a little over a week i found the problem i put the needles in through the plastic nub piece and not over it
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